According to a press release from the court, following oral arguemnts on Monday, the Jsutice underwent outpatient tests at Sibley Memorial Hosptial that confirmed she was suffering from a gallstone tahat had migrated to her cystic duct.

Justice Ginsburg is said to be resting comfortably and plans to participate in the Supreme Court's orgal argument teleconference tomorrow morning remotely from the hospital.

Ginsrubg is expected to remain in the hosptial for another few days following the arguments.